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The Parker Solar Probe will make its closest approach yet to the Sun

(arstechnica.com)
164 points pseudolus | 1 comments | 20 Dec 24 11:23 UTC | HN request time: 0.274s | source
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kfogel ◴[20 Dec 24 21:27 UTC] No.42475215[source]▶
Most of the comments so far are about the temperature and the closeness to the sun, and, hey, I get it: those are both amazing to think about. But to me even more amazing is... 0.16% of the speed of light?? Yikes.
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verzali ◴[20 Dec 24 21:37 UTC] No.42475305[source]▶
Pretty sure it's 0.064%, not sure why the article got it wrong, still impressive though
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1. belter ◴[21 Dec 24 19:07 UTC] No.42481519[source]▶
Correct. About 18 milliseconds of time dilation per day assuming 690,000 km/h - 430,000 mph.